Vacuum-cleaner.



W. H. RAKESTRAW. VACUUM CLEANER. APPLICATION FILED MAR. 31, 1910.

Patented Sept. 27, 1910.

, I INVB'NTOIZ,

T FFICE.

WILLIAM H. RAKES'IRAW, OF BLOOMINGTON, ILLINOIS.

VACUUM-CLEANER.

Specification of Letters Patent.

Patented Sept. 27, 1910.

original application filed January 21, 1909', Serial Ho. 473,487.Divided and this application filed March 81, 1910. Serial No. 552,733.

To all whom it may concern:

,Be it known that 1, WILLIAM H. RAKE- BTRAW, a citizen of the UnitedStates, residing at Bloomington, in the county of Mc- Lean and State ofIllinois, have invented certain new and useful improvements inVacuum-Cleaners, of which the following is a specification.

My invention relates to certain new and useful improvements in vacuumcleaners, the same being a division of my application filed January 21,1909*, and bearing Serial No. 473,487.

In the drawings, F igure 1 is a side elevation of my device with certainreceptacles shown in vertical section on the line 1-1 of Fig. 2 andshowing certain portions broken away to illustrate detail parts; Fig. 2is a top view of the collector receptacles with the top of thereceptacles removed and with aportion of a connecting pipe and the wallof one of the receptacles broken away; and Fig. 3 is a detail viewshowing the. manner of pivoting a rod to the base adapted to carry aclamp at its top portion to secure dust collector receptacles upon thebase, and to secure covers to receptacles.

In the drawings, A represents a base support for the dust collectingreceptacles and the pump, there being provided upon the upper surface ofthe base circular IIbS as a within which collector receptacles areadapted to be seated.

B is a rod pivoted to the lugs b secured to the base A as best shown inFig. 3

C and D are cylindrical receptacles provided with removable lids orcovers as E F.

Gris a yoke or clamp adapted to be carried upon the rod B and the outerends thereof to engage the lids E and F, and g is a thumb nut carriedupon the upper threaded end of rod B and is adapted to be screwed up anddown upon the rod for the purpose of securing the lids in place or forthe pur ose of releasing engagement by yoke G 0- said lids, andpermitting the rod to swing freely to one side so that the lids may bereleased and the receptacles removed from their seat upon base A.

H is an air inlet duct entering the receptacle O angularly withreference to the wall thereof. V

l is a portion of a hose which is adapted to be connected with head Jbut as the head and its connection with the collector receptacles doesnot form a part of this inventlon, it is deemed unnecessary toparticuiarly describe its construction and connec- K is an outlet ductfrom receptacle (3 adapted to communicate with receptacle I), am ductbeing suitably secured to the walls ofeach receptacle in such a manneras to unite them. The duct K extends u wardly Within receptacle G toaoint near y at its top and is designed to be ocated so that the openingtherein will be at substantially the vertical center of receptacle 0.The duct enters receptacle D at about the vertical center its wall andis adapted to discharge air thereinto tangentially with reference to theinterior circumference of the receptacle D.

L is a cylindrical screen frame structure comprising a head or topportion M and a bottom portion N, and a screen 0 is adapted to connectthe head and bottom portions and to form a cylindrical body, and P is acloth covering extending entirely around the body of the frame structureL, which is designed in practice to be of a material having rather aheavy nap, as such a fabric is best suited for the purpose designed inconnection with the operation of the device as a vacuum cleaner.

Q is a flanged tubular casting adapted to have a central opening and isadapted to enter an opening in the bottom of receptacle D and to bebolted to the bottom of the receptacle in the manner shown in thedrawings so as to make a complete closure. The flanged tubular casting Qis formed with an ofiset therein as at 6, shown in Fig. 2, reducing thesize of the upper portion thereof and upon the offset or shoulder 2'there is adapted to be placed a rubber washer or suitable gasket as is.The bottom N of the frame structure L is provided with an opening m atthe center thereof which is adapted to be seated upon the ofi'set or therubber Washer 70 thereon in such a relation as to be readily detached orseparated from its support.

R is a pipe or duct communicating with the flanged tubular casting Q andwlth the pump S. As the pump referred to forms no part of my invention,it is deemed unnecessaryto enter into detail description of the same.

' In the use of the device, it is designed that when the arts are in thepositions substantially as s own in Fig. 1, and through the eration ofthe pump,

Wlll operate, through the suction from the ump, to draw the air throu hthe shoe and oseconnection into rece tac e Grand as the inlet duct Henters angu arly with reference to the wall of the rece tacle, acircular mo tion will be given to t e air, inducing centrifugal action,which will act to separate the major ortions of the dust or dirt fromthe air an cause it to be lodged in the bot- 4 tom of receptacle 0, andthe li hter and purer air tending to the center w' rise and pass outthrough outlet duct K and be d1scharged tan entiallly with reference tothe interior walIs of receptacle D and because of the manner of thedischarge of the air into the receptacle, it will be given a circularmotion, causing theair to travel around and over substantially theentire surface P of the screen frame structure L, thereby distributinthe screening function of the screen rame L. The air passing throu h thecloth and wire screen covering of t e screen frame L will pass outthrough the opening in the flan d tubular casting Q andthence throughpipe B into pump S and will escape from the pump through the outletducts T T. It is designed 1n practice that the pump shall be operated byhand power by substantially the'means shown in the drawings, electric orother suitable power.

When a quantity of dust and dirt has accumulated 1n receptacles C and Dand upon the surfaceof screen frame L, the receptacles.

may be readily removed by unscrewing the thumb nut g and swinging thebar B sidewise, then the tops E and F may be removed and the receptaclesma be lifted togather bodily from the base, t en the screen rame may belifted out of the receptacle D and the surface thereof dusted off andthe dirt that has accumulated in receptacles C and D ma be emptied outand the receptacles place in the positions shown in Fig. 1, in readinessfor operation.

What I claim and desire to secure by Letters Patent is:

1. In a device of the class described, the combination of a dustcollecting receptacle provided with an opening in the bottom thereof, aninlet duct opening into said receptacle tangentially with relation tothe interior surface thereof, a c lindricalscreened body supportedwithin t e receptacle in a relation to provide an air circulating spaceentirely around and between the vertical walls of the rece tacle and thescreened body. and provide with an opening in the bottom thereof, anoutlet duct extending upwardliyl through the o enings in'the bottom of te receptacle an the screened body, 65 and supporting the latter in adetachable suction is created, it-

or that it may be operated by" the screened body.

relation, and a vacuum pump communicat ing with the outletduct.

'2. In a device of the class described, the combination of a verticallydisposed, cylindrical dust collectingl receptacle provided with anopening in t e bottom thereof, an inlet duct opening into said'receptacle at about the center of its vertical wa l and in a directiontangential with relation to the interior surface thereof, a cylindricalscreened body within said receptacle having an opening in the bottomthereof, an outlet duct extending upwardly through the openings in thebottom of the receptacle and the screened body and supportin the latterin a ddzachable relation, an a vacuum pump communicating with the outletduct.

3. In a device of the class described, the combination of a verticallydis 'osed, cylindrical dust collecting receptadle provid with an openingin the bottom thereof, an inlet duct opening into said receptacle atbout' the center of its vertical wall and tangentially with relation tothe interior surface thereof, a cylindrical screened body within saidreceptacle provided with an opening in the bottom thereof; an outletduct extending upwardly through the openings in the bottom of thereceptacle and thescreened body provided with an offset thereon, agasket or washer upon said offset adapted to form a seat for 4. In adevice of the class described, the combination of a vertically disposed,cylindrical dust collecting receptacle provided with anoutlet ductextending upwardly through the bottom thereof, an inlet duct openinginto said receptacle at about the center of its vertical wall and in atangential relation with the interior walls thereof a cylindricalscreened body within sai receptacle supported in relation to provide aircirculating space between the vertical body and supported uponthe outletduct in a detachable relation, and a vacuum pump operatively connectedwith the outlet stud.

5. A dust collector including an upright receptacle, a suction ipeextending vertically in the rece tac e provided with an offset to form as oulder thereon, a closed screened body sleeved upon the suction pi e,

110 walls of the receptacle and the screened v the receptacle, astrainer on the screened suction pipe, a cloth strainer extending bodyand an inlet duct opening into the reabout the screened bod an inletpipe enceptacle at about its Vertical center .and tering the receptacleat approximately its tan 'entially ith reference to the interiorvertical center and discharging air into the surface thereof. lreceptacle tangentially with relation to the 7. A dust collectorincluding an upright interior surface thereof. receptacle, a lidtherefor, a suction pipe ex- In testimony whereof I have afiixed mytendinw through the bottom and vertically signature in presence of twoWitnesses. upwardly into the receptacle provided with WILLIAM RAKESTRAW.a reduced portion and a Shoulder thereon, Witnesses: Y

a screened body within the receptacle re- CALVIN RAYBURN,

movably seated upon the shoulder of the CHARLES M. BUCK.

